Sources
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Engineering @ Scale — 2026-04-30#
Signal of the Day#
When processing sensitive data with large language models, decoupling deterministic data extraction from probabilistic structuring is critical to bypass model-level safety interference. Sun Finance attempted to use Anthropic’s Claude to extract data directly from identity documents, but the model’s built-in PII safety protocols actively degraded character recognition, resulting in a poor 61.8% accuracy. By shifting the raw extraction to a traditional OCR layer (Amazon Textract) and restricting the LLM strictly to JSON structuring, they bypassed the safety throttles, pushing extraction accuracy to 90.8% while reducing per-document costs by 91%.